Add link to Modrinth page and requirements

Maybe this'll help it appear in google search results

README.md

@@ -11,6 +11,8 @@
 A simple fabric mod to hide shields while not defending or to hide other offhand items (specified in the settings).<br>
 By default it hides the shield when not blocking and the totem of undying.
 
+**Download it** from the [Modrinth](https://modrinth.com/mod/shielddisruptor) page: https://modrinth.com/mod/shielddisruptor
+
 This is a port of the original ShieldDisruptor by [HeyZeer0](https://github.com/HeyZeer0) to newer Minecraft versions, as the original is abandoned. I'll try to maintain this as best as possible.
 
 **Current Differences:**
@@ -37,6 +39,6 @@ This requires Mod Menu to be installed.
 
 
 ## Compilation
-Run `gradle build`.
+Run `./gradlew build`.